a=0.34679014,b=0.12026340
a=0.75867996,b=0.57559529
a=0.20460331,b=0.04186251
a=0.38139939,b=0.14546550
b=0
a=0.52712616,b=0.27786199
a=0.61178406,b=0.37427974
a=0.59855401,b=0.35826690
a=0.03144188,b=0.00098859
a=0.50262601,b=0.25263290
